Immanuel Kant!
command of sovereign sanctioned by punishments is law by imperative theory and law as legal science of norms is by pure theory of law.
The legal theory that laws should be made by a sovereign, and that by its definition law is the command of a sovereign, no one/thing else. The main exponant of the theory is Austin, although as a theory the imperative theory of law has been widely discredited, most notably by Hart. See article linked to below for further information: http://lawmatters.in/content/austin%E2%80%99s-imperative-theory-of-law-173
Susini. has written: 'Armed Struggle, A Strategic Imperative'
Richard Rohner has written: 'The artic imperative'
The author of 'theory of the earth' is James Hutton.
Charles M. Johnston has written: 'The Creative Imperative'
I think"Sorokin" or "lipsaid & benedict" is the author of that theory.
Imperative
You mean the evolution theory? Darwin
You are very imperative.
Sharon Nimtz has written: 'Tomato imperative!' -- subject(s): Cookery (Tomatoes)
Inessential is an antonym for imperative.